Neogate TA810 with FreePBX specific FXO dial out

Good morning,

I have a question regarding a Neogate TA810.

Reading the instructions on how to implement a connection between the FreePBX and the TA it works
perfectly if you group them together.

Individually i am having trouble to isolate each FXO port and choose a specific line to choose from.

I believe from what @stewart1 is saying in a previous post the solution is to make a seperate trunk and group its line with it but i can’t seem to register it as a SIP trunk with it. It gets rejected.

Any ideas how to troubleshoot this?

Thank you in advacne